If VIRUS is coded WGUQX, then how is ELEMENT coded?

What value will come in place of question mark (?) in the number – series given below?

3 42 120 237 393 ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

4, 5, 7, (?), 19

Direction. Study the following information carefully and answer the given below question:
 Alia, Babita, Chandu, Deepika, Esha, Fardeen and Geeta are seven Doctors, visiting a hospital on four days - Tuesday, Wednesday, Friday and Saturday of a week. At least one person must come on a day but not more than two. Each person has a different specialisation-
 HIV, Orthopaedics, Paediatrics, Neurology, Ophthalmology, Radiology and Oncology. Deepika comes with the Radiologist on Friday. The Paediatrician does not come on Saturday and also not with Esha or Geeta. Only the Oncologist comes on Tuesday. Babita comes on Wednesday and is not a Paediatrician. Chandu comes on Wednesday. Geeta is not a Radiologist. The Paediatrician comes with the HIV Specialist. The Neurologist comes on Friday. Alia is neither Specialization in an Orthopaedician nor a Radiologist. Nobady comes with Fardeen. 

Who comes to the hospital along with Alia? 

There are five friends A, B, C, D and E. Two of them are businessmen while the other three belong to different occupations viz. medical, engineer and legal. One businessman and the lawyer stay in the same locality S, while the other three stay in three different localities P, Q and R. Two of these five persons are Hindus while the remaining three come from three different communities viz. Muslim, Christian and Sikh. The lawyer is the oldest in age while one of the businessmen who runs a factory is the youngest. The other businessman is a cloth merchant and age-wise lies between the doctor and the lawyer. D is a cloth merchant and stays in locality S while E is a Muslim and stays in locality R. The doctor is a Christian and stays in locality P, B is a Sikh while A is a Hindu and runs a factory.

What is B's occupation?

Find the odd from the given alternatives?

Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
555 * 5 * 11 * 25 * 4  

Find out the two signs to be interchanged for making following equation correct.
5 + 3 x 66 - 11 ÷ 8 = 15